|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||180/193; 180/0095; 180/184|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 17 인용 특허 : 7|
An improved torsion type rear suspension system for a snowmobile. The suspension includes a pair of rails movable with respect to the snowmobile body and a pair of torsion springs disposed between the body and the rails for biasing the suspension toward its extended position. Also included is a cam block having a contoured cam surface which engages a leg of the torsion spring at a variable point of contact. As the suspension moves from the extended to the collapsed position, the effective length of the spring leg is reduced, resulting in a nonlinear chan...
1. An improved suspension for a snowmobile, the suspension being movable between an extended and a collapsed position and the snowmobile including a body, the suspension comprising:a suspension member movable with respect to the body; at least one torsion spring for biasing the suspension toward the extended position, the spring including a coil portion and a leg extending from the coil; and, means for engaging the leg at a variable point of contact, which point translates with respect to the engaging means and with respect to the leg as the suspension m...